feat(blog): Treat Notion Hidden posts as private across site and RSS

3 files changed, 175 insertions, 9 deletions

diff --git a/src/modules/blog/config.rs b/src/modules/blog/config.rs
index a061b7f..04c4e23 100644
--- a/src/modules/blog/config.rs
+++ b/src/modules/blog/config.rs
@@ -15,4 +15,5 @@ pub struct BlogPost {
   pub last_modified: Option<String>,
   pub content:       String,
   pub blog_id:       String,
+  pub hidden:        bool,
 }
diff --git a/src/modules/blog/module.rs b/src/modules/blog/module.rs
index 51fa06b..af20488 100644
--- a/src/modules/blog/module.rs
+++ b/src/modules/blog/module.rs
@@ -72,10 +72,7 @@ pub fn module(router: &mut windmark::router::Router) {
           "This blog could not be found.",
         );
       };
-      let category_posts: Vec<_> = posts
-        .iter()
-        .filter(|post| post.blog_id == category.notion_id)
-        .collect();
+      let category_posts = visible_posts_for_blog(&posts, &category.notion_id);
       let post_listing = category_posts
         .iter()
         .map(|post| {
@@ -131,9 +128,8 @@ pub fn module(router: &mut windmark::router::Router) {
           "This blog could not be found.",
         );
       };
-      let matched_post = posts.iter().find(|post| {
-        post.blog_id == category.notion_id && slugify(&post.title) == post_slug
-      });
+      let matched_post =
+        find_visible_post_by_slug(&posts, &category.notion_id, &post_slug);
       let Some(post) = matched_post else {
         return windmark::response::Response::not_found(
           "This post could not be found.",
@@ -184,6 +180,26 @@ fn construct_header(post: &BlogPost) -> String {
 
 fn slugify(text: &str) -> String { text.replace(' ', "_").to_lowercase() }
 
+fn visible_posts_for_blog<'a>(
+  posts: &'a [BlogPost],
+  blog_identifier: &str,
+) -> Vec<&'a BlogPost> {
+  posts
+    .iter()
+    .filter(|post| post.blog_id == blog_identifier && !post.hidden)
+    .collect()
+}
+
+fn find_visible_post_by_slug<'a>(
+  posts: &'a [BlogPost],
+  blog_identifier: &str,
+  post_slug: &str,
+) -> Option<&'a BlogPost> {
+  visible_posts_for_blog(posts, blog_identifier)
+    .into_iter()
+    .find(|post| slugify(&post.title) == post_slug)
+}
+
 fn build_rss_feed(blog_slug: &str) -> windmark::response::Response {
   let categories = BLOG_CATEGORIES.read().unwrap();
   let posts = BLOG_POSTS.read().unwrap();
@@ -207,7 +223,7 @@ fn build_rss_feed(blog_slug: &str) -> windmark::response::Response {
   xml.add_field("lastBuildDate", &chrono::Local::now().to_rfc2822());
   xml.add_link(&format!("{ROOT_GEMINI_URL}/blog/{blog_slug}.xml"));
 
-  for post in posts.iter().filter(|post| post.blog_id == category.notion_id) {
+  for post in visible_posts_for_blog(&posts, &category.notion_id) {
     let post_slug = slugify(&post.title);
 
     xml.add_item(&{
@@ -314,6 +330,7 @@ fn fetch_from_notion() {
         },
         content:       page_content,
         blog_id:       blog_identifier,
+        hidden:        notion::extract_checkbox(&page.properties, "Hidden"),
       }
     })
     .collect();
@@ -323,7 +340,7 @@ fn fetch_from_notion() {
 
     global_posts.clear();
 
-    for post in &fetched_posts {
+    for post in fetched_posts.iter().filter(|post| !post.hidden) {
       let blog_title = categories
         .iter()
         .find(|category| category.notion_id == post.blog_id)
@@ -361,3 +378,120 @@ pub fn refresh_loop() {
     }
   }
 }
+
+#[cfg(test)]
+mod tests {
+  use super::{
+    build_rss_feed, find_visible_post_by_slug, slugify, visible_posts_for_blog,
+    BLOG_CATEGORIES, BLOG_POSTS,
+  };
+  use crate::modules::blog::config::{BlogCategory, BlogPost};
+
+  #[test]
+  fn hidden_posts_are_excluded_from_rss_feed() {
+    let original_categories = BLOG_CATEGORIES.read().unwrap().clone();
+    let original_posts = BLOG_POSTS.read().unwrap().clone();
+    let category = BlogCategory {
+      title:       "Test Blog".to_string(),
+      description: None,
+      priority:    1,
+      notion_id:   "blog-id".to_string(),
+    };
+    let visible_post = BlogPost {
+      title:         "Visible".to_string(),
+      description:   None,
+      author:        None,
+      created:       None,
+      last_modified: None,
+      content:       "visible content".to_string(),
+      blog_id:       "blog-id".to_string(),
+      hidden:        false,
+    };
+    let hidden_post = BlogPost {
+      title:         "Hidden".to_string(),
+      description:   None,
+      author:        None,
+      created:       None,
+      last_modified: None,
+      content:       "hidden content".to_string(),
+      blog_id:       "blog-id".to_string(),
+      hidden:        true,
+    };
+
+    *BLOG_CATEGORIES.write().unwrap() = vec![category];
+    *BLOG_POSTS.write().unwrap() = vec![visible_post, hidden_post];
+
+    let feed = build_rss_feed(&slugify("Test Blog"));
+    let feed_xml = feed.content;
+
+    assert!(feed_xml.contains("<title>Visible</title>"));
+    assert!(!feed_xml.contains("<title>Hidden</title>"));
+
+    *BLOG_CATEGORIES.write().unwrap() = original_categories;
+    *BLOG_POSTS.write().unwrap() = original_posts;
+  }
+
+  #[test]
+  fn visible_posts_for_blog_excludes_hidden_posts() {
+    let visible_post = BlogPost {
+      title:         "Visible".to_string(),
+      description:   None,
+      author:        None,
+      created:       None,
+      last_modified: None,
+      content:       "visible content".to_string(),
+      blog_id:       "blog-id".to_string(),
+      hidden:        false,
+    };
+    let hidden_post = BlogPost {
+      title:         "Hidden".to_string(),
+      description:   None,
+      author:        None,
+      created:       None,
+      last_modified: None,
+      content:       "hidden content".to_string(),
+      blog_id:       "blog-id".to_string(),
+      hidden:        true,
+    };
+
+    let posts = vec![visible_post, hidden_post];
+    let visible_titles = visible_posts_for_blog(&posts, "blog-id")
+      .into_iter()
+      .map(|post| post.title.clone())
+      .collect::<Vec<_>>();
+
+    assert_eq!(visible_titles, vec!["Visible".to_string()]);
+  }
+
+  #[test]
+  fn find_visible_post_by_slug_skips_hidden_posts() {
+    let visible_post = BlogPost {
+      title:         "Visible Post".to_string(),
+      description:   None,
+      author:        None,
+      created:       None,
+      last_modified: None,
+      content:       "visible content".to_string(),
+      blog_id:       "blog-id".to_string(),
+      hidden:        false,
+    };
+    let hidden_post = BlogPost {
+      title:         "Hidden Post".to_string(),
+      description:   None,
+      author:        None,
+      created:       None,
+      last_modified: None,
+      content:       "hidden content".to_string(),
+      blog_id:       "blog-id".to_string(),
+      hidden:        true,
+    };
+    let posts = vec![visible_post, hidden_post];
+
+    assert!(
+      find_visible_post_by_slug(&posts, "blog-id", "visible_post").is_some()
+    );
+    assert!(
+      find_visible_post_by_slug(&posts, "blog-id", "hidden_post").is_none()
+    );
+  }
+}
diff --git a/src/notion.rs b/src/notion.rs
index 7f9b413..006466f 100644
--- a/src/notion.rs
+++ b/src/notion.rs
@@ -86,6 +86,10 @@ pub fn extract_relation_ids(
     .unwrap_or_default()
 }
 
+pub fn extract_checkbox(properties: &serde_json::Value, field: &str) -> bool {
+  properties[field]["checkbox"].as_bool().unwrap_or(false)
+}
+
 pub fn format_notion_date(iso_date: &str) -> String {
   chrono::NaiveDate::parse_from_str(iso_date, "%Y-%m-%d").map_or_else(
     |_| iso_date.to_string(),
@@ -200,3 +204,30 @@ pub fn fetch_page_content(
 
   Ok(all_lines.join("\n"))
 }
+
+#[cfg(test)]
+mod tests {
+  use {super::extract_checkbox, serde_json::json};
+
+  #[test]
+  fn extract_checkbox_true() {
+    let properties = json!({
+      "Hidden": {
+        "checkbox": true
+      }
+    });
+
+    assert!(extract_checkbox(&properties, "Hidden"));
+  }
+
+  #[test]
+  fn extract_checkbox_false_when_missing() {
+    let properties = json!({
+      "Title": {
+        "title": []
+      }
+    });
+
+    assert!(!extract_checkbox(&properties, "Hidden"));
+  }
+}